ASTROSAT CZTI

Data Quality Report

Orbit 20220615_A11_089T02_9000005188_level2

Creation date: 2022-07-04T14:53:06.267390
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_089T02_9000005188cztM0_level2_bc.evt modeM0/AS1A11_089T02_9000005188cztM0_level2_quad_clean.evt
Size (bytes)5,692,800,9601,225,843,200
Size5.3 GB 1.1 GB
Events in quadrant A23,568,5738,179,256
Events in quadrant B56,812,9377,177,420
Events in quadrant C28,034,1337,852,555
Events in quadrant D57,254,6867,115,750

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02070010
B03608200
C02182450
D03298460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020260
B020260
C020260
D020260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A991652200.221852%
B991631778417.934108%
C9916512301.240357%
D991651051010.598497%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 138337 99187 21 21 0.02% 0.02%
B 138337 99118 967 967 0.70% 0.98%
C 138337 99167 315 315 0.23% 0.32%
D 138337 99148 4480 4480 3.24% 4.52%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 2628193 2314.78 5152 5075 1133.2
A 9 143 366262 318.73 5152 5075 1133.2
A 15 223 195975 168.46 5152 5075 1133.2
B 5 172 17831471 19181.89 4675 4576 929.4
B 4 171 12451075 13392.54 4675 4576 929.4
B 5 236 4730242 5084.86 4675 4576 929.4
C 15 214 3932067 3520.31 4908 4869 1115.6
C 0 207 2422160 2166.84 4908 4869 1115.6
C 0 10 2222078 1987.49 4908 4869 1115.6
D 12 227 14331048 12560.81 4767 4627 1140.6
D 12 6 8349718 7316.63 4767 4627 1140.6
D 12 235 5259741 4607.47 4767 4627 1140.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter